What a 90% Junk Silver Lot Is Really Worth Before You Bid

A 90% junk silver lot is worth its silver, not its hammer. Before you bid, price it three ways. Your all-in cost after the buyer's premium and shipping, the live melt value (the floor), and what a dealer charges for the same junk silver (the ceiling). If your all-in per ounce lands near melt and under dealer retail, it is a deal worth chasing. If the premium and shipping push your all-in past what a dealer would charge, the lot that looked cheap on the hammer is an overpay. Here is how to run that decision before you raise your paddle.

The one number the catalog never shows you

A junk silver lot is usually listed by face value, something like "$50 face, 90% US silver," sometimes called constitutional silver because it is the pre-1965 coinage. The estimate next to it is a guess, and the hammer is only the first number you pay. What you actually spend is the all-in, and that is the number the listing never prints.

So you have to build it yourself, and then judge it against two anchors:

• Melt value is the floor. It is the raw silver in the lot at today's spot, and no fair price sits far below it for long.
• Dealer retail is the ceiling. It is what you would pay a reputable dealer for the same bag of junk silver, delivered. If your all-in beats that, buying at auction earned you something. If it does not, you did the work of bidding to pay dealer prices or worse.

Your all-in cost is where you actually land between that floor and ceiling. That three-number habit is the same one we apply to any coin or bar. Junk silver just makes the melt step cleaner, because face value tells you the silver directly.

Step one: how much silver is in the lot

You do not weigh the coins or grade them. Each dollar of face value in standard junk silver holds a known, average amount of pure silver:

• US 90% (pre-1965 dimes, quarters, halves): about 0.715 troy ounces per $1 face.
• Canadian 80% (1966 and earlier dimes, quarters, halves): about 0.60 troy ounces per $1 face.

Those two constants, and which coins break them, are the whole subject of what junk silver is, so we will not re-derive them here. For a lot, just multiply. A $50 face US 90% lot holds 50 x 0.715 = 35.75 troy ounces of silver. If you would rather work it as a "times face" multiplier or price a mixed bag, the bag-value shortcut has that, and the coin-by-coin melt formula has the version for odd pieces the constants do not cover.

That 35.75 ounces is the fixed thing about the lot. Everything else is money layered on top of it.

Step two: run one lot all the way to all-in

Now build the real cost. Take the same $50 face US 90% lot. Say silver spot is $70 an ounce and the buyer's premium is 20%, both illustrative figures, not a live quote. You bid $2,300 and win.

Look at what happened. The hammer of $2,300 was below the lot's $2,502.50 melt value (35.75 oz x $70), so at the paddle it looked like a steal, silver bought under spot. But the premium and shipping pushed the all-in to $2,795, which is $78.18 per ounce. That is above the $70 melt floor and above a dealer's $75 retail on the same junk silver. The lot that read as a bargain on the hammer is an overpay once the fees land. That reversal is the whole reason the all-in matters, and it is the trap junk silver hides especially well, because face-value listings invite you to anchor on melt and forget the premium.

Step three: back into your maximum bid

The fix is to decide your ceiling before the lot opens, not after. Pick the all-in per ounce you are willing to pay, usually at or just under dealer retail, and work backwards to the hammer that produces it.

The formula:

Max hammer = (target all-in per ounce x ounces − shipping) ÷ (1 + premium rate)

Using the same lot, with dealer retail at $75 an ounce as your target:

• Target all-in = 35.75 oz x $75 = $2,681.25
• Subtract shipping: $2,681.25 − $35 = $2,646.25
• Divide by 1.20: $2,646.25 ÷ 1.20 = $2,205

So your maximum hammer is about $2,205, not the $2,502 melt figure a naive bidder anchors to, and certainly not the $2,300 that felt safe because it was "under melt." Bid past $2,205 and you are paying more than a dealer would charge for the identical junk silver, delivered to your door with no auction risk. Write that ceiling down before the lot opens and hold it, because the room will push you past it in five-dollar increments if you let it.

Why dealer retail, not just melt, is the ceiling

Some buyers only compare to melt and treat anything near it as a win. On junk silver that is not enough, because junk silver already trades at a low premium over melt in the open market. A dealer will sell you a bag at melt plus a few dollars an ounce, no bidding, no shipping surprise. So the honest ceiling is not melt, it is the delivered dealer price. An auction lot has to beat that to be worth the effort and the risk. When it does, and junk silver lots often do when the room is thin, you have genuinely bought under retail. When it does not, the auction was just a slower, riskier way to pay retail.

One adjustment for Canadian buyers

Two things change north of the border. Canadian 80% silver uses the 0.60 factor, so a $50 face Canadian lot holds 30 ounces, not 35.75. And junk silver is taxable here. It sits below the 99.9% purity that earns the bullion exemption, so GST/HST applies where investment bullion would be exempt. Add your sales tax as one more line above the all-in total, and the max-bid math shifts down accordingly. Fold the rate in before you set your ceiling, not after you have won.

Price one lot, or price the whole sale

Quick Check runs this exact decision on a single lot for free. Paste a junk silver lot, and it applies the silver content, live spot, and the premium and shipping you enter, then sets your all-in per ounce against both melt and dealer retail so you can see your ceiling before you bid.

That is one lot at a time. A junk silver sale is rarely one lot, and the deals are never the lots everyone is already watching. The paid app prices your whole catalog or the whole sale at once and flags every lot whose all-in beats retail, so you are not hand-building a table for each of two hundred entries and missing the quiet bag in the back. Free prices one lot. Paid reads the entire sale and finds the deals for you.

No hype, no hot tips. Just the silver in the lot, the fees on top, and the two numbers a fair bid has to beat, worked out before you raise your paddle instead of after.